Unit 4 Section A 3a-3d 课件2025-2026学年人教版英语八年级下册

Speaking (3a-3d) 世界上 地球上 8,848.86米高 11,000米深 9,000,000平方千米大小 低于/高于海平面 尽你所能快 在....的表面 深海 深海动物 海底 不同寻常的能力 做研究 某人自己的 在....的底部 in the world on earth 8,848.86 meters high/in height 11,000 meters deep / in depth 9,000,000 square kilometres in size below/above sea level as quickly as possible=as quickly as you can on the surface of... deep sea deep-sea animals ocean floor unusual abilities do/make research on... one’s own + n. at the bottom of... 1a-2d China Egypt Today, we’ll explore some great rivers on Earth. Ella Yaming Let’s read the conversation between Yaming and Ella? 3a Read the conversation and underline the three rivers mentioned. River _____________ _____________ _____________ Yellow River Yangtze River Nile River What river did Ella visit last trip? Yellow River. Hukou Waterfall 壶口瀑布 What’s this natural wonder? 课本P34 5 Yaming: Welcome back, Ella! How was your trip? Ella: It was great! We saw the Hukou Waterfall on the Yellow River. Is that the longest river in China? Yaming: No, the Yangtze River is the longest river in China. It travels the farthest and is about 6,300 kilometres long. The Yellow River is 5,464 kilometres long and is the second longest. By the way, do you know why it’s called the Yellow River? Ella: Because it’s yellow? Yaming: Right. Some parts of the river carry brown and yellow earth. sb./sth. be called + 名称 某人/物被称为....(被动) 最长的河流 流经的距离最远 第二长 顺便问一下 the+序数词+最高级 第……最……的” 一些河段 泥土;土壤 6 Ella: That’s interesting! I like learning about rivers. My favourite is the Nile. Did you know it’s the longest river in the world? Yaming: Yes, it’s 6,671 kilometres long. It’s very important in Egypt’s history. Ella: That’s right. Both the Nile and the Yellow River helped ancient civilizations to develop. And they’re still very important today. Yaming: Yes. In China, we even call the Yellow River our “mother river”! Ella: We should protect them at all costs. 不惜一切代价 了解；学习 both...and... .....和.....都 古代文明 call sb./sth. +名称 把某人/物叫做…… 7 (Yellow River) (Yangtze River) (Nile River) Which rivers are in China? Which river is in Egypt? River Country Length Importance Yellow River ________ _______ km helped in the development of ancient ____________ Nile River ________ _______ km China 5,464 Egypt 6,671 civilizations 3b What do Yaming and Ella know about these rivers? Read the conversation again and complete the table. Rivers are the lifelines(时间线) of civilizations. the development of ... .......的发展 9 Write about the features of the three rivers. River Feature（特征） Yangtze River The _________ river in china It travels the _________ Yellow River The _____________ river in China “________ river” Nile River The longest river __________ Ella’s ___________ river longest farthest second longest Mother in the world favourite It’s yellow. Some parts of the river carry brown and yellow earth. It helped ancient civilizations to develop. Why is it called the Yellow River and “mother river”? 1 2 Rivers are still very important today. We should protect them at all costs. 不惜一切代价 泥土;土壤 1. 流经的距离最远 2. 顺便问一下 3. 第二长河 4. ……和……都 5. 不惜任何代价 6. 古代文明 7. 最长的河流 8. 5,464公里长 9. 了解/学习 10. 把某人/物叫做…… 11.某人/物被称为....(被动) 12.......的发展 travel the farthest by the way the second longest river both...and... at all costs ancient civilizations the longest river 5,464 kilometres long learn about (learned/learnt) call sb./sth.+名称 sb./sth. be called... the development of... Ella: Could you tell me more about China, Yaming? Yaming: Sure! What would you like to know? Ella: What’s the biggest desert in China? Yaming: It’s the Taklimakan Desert. Ella: Do you know ...? Imagine that you are Yaming or Ella. Continue the conversation with a partner about other geographical features in China. 3d The largest desert Taklamakan Desert 330,000 km2(塔克拉玛干沙漠) The longest wall The deepest lake The Great Wall 21196.18 km Tianchi Lake on Changbai Mountain 373 m (天池) 地理特征 Lucid waters and lush mountains are invaluable assets. We should protect rivers at all costs. 1.The Yellow River is 5,464 kilometres long and is the second longest. 黄河全长 5464 千米,是第二长的河流。 “the+序数词+最高级” 是一个常用的语法结构,用于表示 “第几最……”,强调在多个事物中按顺序排列的 “最……” 的那一个。 如: This is the third most popular song of the year. 这是今年第三受欢迎的歌曲。 (　　)(1)Shenzhen has grown into 　　　　city in China by GDP. 　　　　　　　　　　　　 　　　　　　　　　　　　 　　　　　　　　　　　　 A.the three largest B.the third largest C.third largest (　　)(2)The Great Wall is one of 　　　　wonders in the world, and it’s also　　　　 man⁃made structure in the world.  A.the greatest; the longest B.greatest; longest C.the greatest; longest B A 2.We should protect them at all costs.我们应当不惜一切代价保护它们。 at all costs意为“不惜一切代价”,相当于at any cost和no matter what, 强调为了 达成某个目标或避免某种情况，愿意付出任何努力、承担任何风险或牺牲。 如：We must protect our citizens（公民） at all costs. 我们必须不惜一切代价保护我们的公民。 by all means意为“想尽一切办法”,强调“尽一切可能”, 但更侧重方法而非牺牲。 如：We must save him by all means.我们必须想尽一切办法救他。 他决心不惜一切代价拯救他的公司。 He was determined to save his company__________________. at all costs 3. Both the Nile and the Yellow River helped ancient civilizations to develop. 尼罗河和黄河都曾助力古代文明的发展。 develop v. ① China is developing rapidly. ② We should develop a good habit of reading. ③ They plan to develop a new software. 中国发展得很快。 ① 发展 我们应该养成良好的阅读习惯。 他们计划开发一款新软件。 ② 增强，养成(习惯) ③ 开发 4. helped in the development of ancient civilizations 促进了古代文明的发展 development n. 发展，壮大 the development of… ……的发展 with the development of… 随着……的发展 The development of technology has changed our lives a lot. 科技的发展极大地改变了我们的生活。 a developed country a developing country developed adj. 发达的 developing adj. 发展中的 发达国家 发展中国家 $